The wrap is pretty robust and while damage can't be completely ruled out I think you're OK. Given some time things should return back to normal. Every once in a while I've either had to much food, or ate something that disagrees with my stomach and I've felt bad for a few days. I think the wrap gets irritated and inflamed and needs time to calm down. I haven't had any dry heaving but I had numerous hiccup episodes early in recovery and I thought I was going to undo everything from the spasms and pain. My wrap is fine and I'm doing very well.
Hope your feeling better soon.